<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

    <div id="app">
        <myheader></myheader>
        <mycontent></mycontent>
        <myfooter></myfooter>
    </div>

</body>
<script src="./vue.min.js"></script>
<script>
    var myheader = {
        template:`<h1>这是头部</h1>`
    }
    var mycontent = {
        template:`<div>内容区域</div>`
    }
    var myfooter = {
        template:"<div><h1>这是底部</h1></div>"
    }
    const vm = new Vue({
        el: "#app",
        components:{
            "myheader":myheader,
            "mycontent":mycontent,
            "myfooter":myfooter
        }
    })
</script>

</html>